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at develop
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namespace Gecode {
/** * \defgroup TaskBranchValSel Generic value selection for brancher based on view and value selection * * \ingroup TaskBranchViewVal */ //@{ /// Base class for value selection template<class View_, class Val_> class ValSel { public: /// View type typedef View_ View; /// Corresponding variable type typedef typename View::VarType Var; /// Value type typedef Val_ Val; public: /// Constructor for initialization ValSel(Space& home, const ValBranch<Var>& vb); /// Constructor for cloning ValSel(Space& home, ValSel<View,Val>& vs); /// Whether dispose must always be called (that is, notice is needed) bool notice(void) const; /// Delete value selection void dispose(Space& home); };
/// User-defined value selection template<class View> class ValSelFunction : public ValSel<View, typename BranchTraits<typename View::VarType>::ValType> { public: /// The corresponding variable type using typename ValSel<View, typename BranchTraits<typename View::VarType>::ValType>::Var; /// The corresponding value type typedef typename ValSel<View, typename BranchTraits<typename View::VarType> ::ValType>::Val Val; /// The corresponding value function typedef typename BranchTraits<Var>::Val ValFunction; protected: /// The user-defined value function SharedData<ValFunction> v; public: /// Constructor for initialization ValSelFunction(Space& home, const ValBranch<Var>& vb); /// Constructor for cloning ValSelFunction(Space& home, ValSelFunction<View>& vs); /// Return user-defined value of view \a x at position \a i Val val(const Space& home, View x, int i); /// Whether dispose must always be called (that is, notice is needed) bool notice(void) const; /// Delete value selection void dispose(Space& home); }; //@}
// Baseclass value selection template<class View, class Val> forceinline ValSel<View,Val>::ValSel(Space&, const ValBranch<Var>&) {} template<class View, class Val> forceinline ValSel<View,Val>::ValSel(Space&, ValSel<View,Val>&) {} template<class View, class Val> forceinline bool ValSel<View,Val>::notice(void) const { return false; } template<class View, class Val> forceinline void ValSel<View,Val>::dispose(Space&) {}
// User-defined value selection template<class View> forceinline ValSelFunction<View>::ValSelFunction (Space& home, const ValBranch<Var>& vb) : ValSel<View,Val>(home,vb), v(vb.val()) { if (!v()) throw InvalidFunction("ValSelFunction::ValSelFunction"); } template<class View> forceinline ValSelFunction<View>::ValSelFunction(Space& home, ValSelFunction<View>& vs) : ValSel<View,Val>(home,vs), v(vs.v) { } template<class View> forceinline typename ValSelFunction<View>::Val ValSelFunction<View>::val(const Space& home, View x, int i) { typename View::VarType y(x.varimp()); GECODE_VALID_FUNCTION(v()); return v()(home,y,i); } template<class View> forceinline bool ValSelFunction<View>::notice(void) const { return true; } template<class View> forceinline void ValSelFunction<View>::dispose(Space&) { v.~SharedData<ValFunction>(); }
}
// STATISTICS: kernel-branch